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How can Bash execute a command in a different directory context?
I have a common command that gets called from within very specific directories. There is only one executable sitting in /bin for this program, and the current working directory is very important for running it correctly. The script affects the files that live inside the directory it is run within.
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Difference between fmt.Println() and println() in Go
...n built into the language. It is in the Bootstrapping section of the spec. From the link:
Current implementations provide several built-in functions useful
during bootstrapping. These functions are documented for completeness
but are not guaranteed to stay in the language. They do not retu...
Test for non-zero length string in Bash: [ -n “$var” ] or [ “$var” ]
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This is very old-school from the Bourne shell days. Don't perpetuate this old habit. bash is a sharper tool than its predecessors.
– tbc0
Jul 26 '16 at 22:00
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Resync git repo with new .gitignore file
...s, lost all of my uncommitted changes, and nearly announced my resignation from my job. The accepted answer on this thread saved my life: stackoverflow.com/questions/2125710/how-to-revert-a-git-rm-r
– jball037
Jul 7 '15 at 15:12
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In HTML I can make a checkmark with ✓ . Is there a corresponding X-mark?
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From w3schools.com/charsets/ref_html_entities_4.asp, it looks like check and cross aren't supported in HTML4 or below.
– mwfearnley
Feb 15 '15 at 17:13
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Android: How to Programmatically set the size of a Layout
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// Calculate titleBarHeight by deducting statusBarHeight from contentViewTop
int titleBarHeight = contentViewTop - statusBarHeight;
Log.i("MY", "titleHeight = " + titleBarHeight + " statusHeight = " + statusBarHeight + " contentViewTop = " + conte...
What is the “realm” in basic authentication
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From RFC 1945 (HTTP/1.0) and RFC 2617 (HTTP Authentication referenced by HTTP/1.1)
The realm attribute (case-insensitive) is required for all
authentication schemes which issue a challenge. The realm value
(case-sensi...
Difference between \A \z and ^ $ in Ruby regular expressions
...re the \n.
My recommendation would just be completely stripping new lines from a username or email beforehand, since there's pretty much no legitimate reason for one. Then you can safely use EITHER \A \z or ^ $.
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Differences in boolean operators: & vs && and | vs ||
...wers here, but they all seem a bit confusing. So after doing some research from the Java oracle study guide, I've come up with three different scenarios of when to use && or &.
The three scenarios are logical AND, bitwise AND, and boolean AND.
Logical AND:
Logical AND (aka Conditional A...
What does && mean in void *p = &&abc;
...ain you what an address of a label means.
After the OS loads the .exe file from the disk, a component of the operating system called "the loader" (windows has the "PE Loader", linux has "ELF loader" or maybe even others, if they're compiled in the kernel), it does a "virtualization" of that program,...